Valve-grinder attachment



Nov. 20 1923.

B. SINE VALVE GRINDER ATTACHMENT Filed Oct. 14. 1922 f. {J (M Wm; W /.9 /9

5% 3 d Sane INVENTOR WITNESSES ATTORNE Patented Nov. 20, 1923.

UNITED STATES BOYD SINE, OF ROMNEY, WEST VIRGINIA.

VALVE-GRINDER, ATTACHMENT.

Application filed October 14, 1922.

To all whom it may concern:

Be it known that I, Born SINE, a citizen of the United States, residing at Romney, in the county of Hampshire and State of West Virginia, have invented new and useful Improvements in Valve-Grinder Attachments, of which the following is a specification.

This invention appertains to an attachment for valve grinders and is particularly directed to the provision of means for gripping the valve so that it may be lifted and held while grinding, thereby enabling the grinding operation to be better accomplished.

An object of the invention is to provide an attachment of the above described character which is adapted to fit all valve grinders and which is capable of being readily applied to or removed from the valve grinder whenever required.

A further and additional object is to provide an attachment of few parts, capable of being manufactured cheaply and of light material, and of a compact design, whereby it can be conveniently handled.

The invention also consists in certain other features of construction, and in the particular combination and arrangement of parts, hereinafter fully described and pointed out in the accompanying drawing, wherein- Figure 1 is a side view of the attachment, as shown applied to a valve,

Figure 2, an end elevation of the attachment, and

Figure 3, a top plan view thereof.

The attachment consists of a pair of gripping members lO and 11 preferably constructed of steel strips undercut at one end, as at 12, to provide gripping jaws 13 and. 14 respectively; each strip being beveled at theback of its jaw as shown at 15.

The strips 10 and 11 are pivotally engaged, as at 16, between a pair of arcuate plates 17 and '18 and cross pins 19 connect the plates above the pivots and engage in notches 20 in each strip for limiting the outward movement of jaw-handles 21, as will no doubt be readily understood. The handles are normally held apartlby the action of a coiled expansion spring 22 arranged semi-circular and which has opposite ends anchored in openings 23 of the handles 21.

Serial N0. 594,619.

Connected to the plates at a central point is the attaching spindle 24. This spindle has one end bifurcated to accommodate the plates 17 and 18 and is secured to the latter by a cotter pin or other fastener 25, which passes transversely .thru the plates and the arms of the bifurcation, as illustrated.

Spindle 24 is tubular and may be of any length desired, being threaded to suit the particular type of valve grinder with which used. Preferably, it is made 17 inches in length so as to reach above the dash.

In practice, the attachment is fitted to the valve grinder by means of the attaching spindle and then engaged with the valve by pressing handles 21 together against the tension of spring 22 until the gripping jaws can be placed in the recesses 26 in the top of the Valve. Upon release of the handles, the spring will force the jaws into gripping engagement with the valve and the latter may thus be lifted and held while grinding.

By means of this attachment, the fourth cylinder valves on a Ford can be ground as well as the first and without the need of coil spring being placed under valve to raise it, as in the old way.

It is believed that from the foregoing the novel features and advantages of the invention will be readily apparent and it is to be further understood that the right is herein reserved to make all such changes and modifications in the arrangement and combination of parts as fall properly within the scope of the invention as hereinafter claime What is claimed is:

An attachment for valve grinders com prising a pair of plates, valve gripping elements pivotally engaged between the said plates, said elements respectively presenting va jaw and a handle, an expansion spring engaged between the said handles and normally holding the same apart, cross pins connecting the said plates and engaging in notches in the said handles to limit the outward movement of the latter, and a carrying spindle connected to the said plates and being threaded for attachment to a grinder.

I testimony whereof I aifix my signature.

BOYD SINE. 

